* {
  margin: 0;
  padding: 0;
}

html,
body,
#app {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: "Helvetica Neue", Helvetica, "microsoft yahei", arial, STHeiTi, sans-serif;
}

a {
  text-decoration: none
}

.content {
  background: none repeat scroll 0 0 #fff;
  position: absolute;
  left: 250px;
  right: 0;
  top: 70px;
  bottom: 0;
  width: auto;
  padding: 40px;
  box-sizing: border-box;
  overflow-y: scroll;
}